Cfl's are not the best light for getting the best out of the plants.But if that's what you have then here goes this may sound over kill but belive me it is not.First line the box with mylar if you can get it if not then paint the inside of the room matt white.In a space the size that you are saying 2 ft/2ft/2ft you are gonna have to flower realy small.Use cool daylight spec on the top the old school flouresent tubes you can get them at 2 ft so i would have 3 in the top,Put a block of wood under each light and screw in place.On the walls of the grow room have all cool tubes apart from 2 warm this will give the plant enoughth heat without haveing heat issues.Mark 1 ft from the bottom of the room on each wall then put 2 cool cfl's then on the same wall 6 ince higher put 1 warm and 1 cool.You want 4 light in all on each wall.Do the exact same on the other wall and you will grow a nice plant.Get the low eco friendly lights that are less watts but still kick out the same watts has a normal light bulb you want 6/150 watt day lightcool spec and 2/150 cfl warm daylight spec and 3 of the highest watt flouresents daylight cool that you can get.Don't forget dude cannabis doubles in size sometimes tripples when flowering during the first 2 week so you will only get 1 plant in the room of this size.